Alphabetical order in taxonomy.php

I am not an expert on Wordpress, but you have to start to become;-)

I created custom post types, and display them, I also created a taxonomy-adhesion.php file (by copying the contents of the archive.php file).

But I wish the Search result will appear in alphabetical order (or by title). But I can not. I do not understand the code enough (especially since I can not find query_posts.

Can you help me please ???

I try since Monday and I have to find the solution for this Thursday night ....

Here is the code of the page:

<?php get_header(); ?>

<div class="content">

    <div class="page-title">

        <h4>

            <?php if ( is_day() ) : ?>
                <?php _e('Date', 'wilson'); ?><span class="name"><?php echo get_the_date(); ?></span>
            <?php elseif ( is_month() ) : ?>
                <?php _e('Month', 'wilson'); ?><span class="name"><?php echo get_the_date('F Y'); ?></span>
            <?php elseif ( is_year() ) : ?>
                <?php _e('Year', 'wilson'); ?><span class="name"><?php echo get_the_date('Y'); ?></span>
            <?php elseif ( is_category() ) : ?>
                <?php _e('Category', 'wilson'); ?><span class="name"><?php echo single_cat_title( '', false ); ?></span>
            <?php elseif ( is_tag() ) : ?>
                <?php _e('Tag', 'wilson'); ?><span class="name"><?php echo single_tag_title( '', false ); ?></span>
            <?php elseif ( is_author() ) : ?>
                <?php $curauth = (isset($_GET['author_name'])) ? get_user_by('slug', $author_name) : get_userdata(intval($author)); ?>
                <?php _e('Author', 'wilson'); ?><span class="name"><?php echo ($curauth->display_name); ?></span>
            <?php else : ?>
                <?php _e( 'Les Membres', 'wilson' ); ?>
            <?php endif; ?>

        </h4>

        <?php
            $tag_description = tag_description();
            if ( ! empty( $tag_description ) )
                echo apply_filters( 'tag_archive_meta', $tag_description );
        ?>

    </div> <!-- /page-title -->

    <div class="posts">

        <?php if ( have_posts() ) : ?>

            <?php rewind_posts(); ?>

            <?php while ( have_posts() ) : the_post(); ?>

                <div id="post-<?php the_ID(); ?>" <?php post_class(); ?>>

                    <?php get_template_part( 'contentmembres', get_post_format() ); ?>

                </div> <!-- /post -->

            <?php endwhile; ?>

    </div> <!-- /posts -->

    <?php if ( $wp_query->max_num_pages > 1 ) : ?>

        <div class="archive-nav">

            <?php echo get_next_posts_link( __('Older<span> posts</span>', 'wilson')); ?>

            <?php echo get_previous_posts_link( __('Newer<span> posts</span>', 'wilson')); ?>

            <div class="clear"></div>

        </div> <!-- /post-nav archive-nav -->

    <?php endif; ?>

<?php endif; ?>

<?php get_footer(); ?>